<template>
  <div class="app-container">
    课程列表
    <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
      <el-form-item>
        <el-input v-model="courseQuery.title" placeholder="课程名称" />
      </el-form-item>

      <el-form-item>
        <el-select
          v-model="courseQuery.status"
          clearable
          placeholder="课程状态"
        >
          <el-option :value="Normal" label="已发布" />
          <el-option :value="Draft" label="未发布" />
        </el-select>
      </el-form-item>

      <el-form-item label="添加时间">
        <el-date-picker
          v-model="courseQuery.begin"
          type="datetime"
          placeholder="选择开始时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>
      <el-form-item>
        <el-date-picker
          v-model="courseQuery.end"
          type="datetime"
          placeholder="选择截止时间"
          value-format="yyyy-MM-dd HH:mm:ss"
          default-time="00:00:00"
        />
      </el-form-item>

      <el-button type="primary" icon="el-icon-search" @click="getList()"
        >查询</el-button
      >
      <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>

    <!--表格-->
    <el-table :data="list" border fit hightlight-current-row>
      <el-table-column label="序号" width="70" align="center">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>

      <el-table-column prop="title" label="课程名称" width="400" />

      <!-- 等价
        <el-table-column label="名称" width="80">
            <template slot-scope="scope">
                {{scope.row.name}}
            </template>
        </el-table-column>
        -->

      <el-table-column label="课程状态" width="80">
        <template slot-scope="scope">
          {{ scope.row.status === "Normal" ? "已发布" : "未发布" }}
        </template>
      </el-table-column>

      <el-table-column prop="lessonNum" label="课时数" width="100" />

      <el-table-column prop="gmtCreate" label="添加时间" width="200" />

      <el-table-column prop="viewCount" label="浏览数量" width="60" />

      <el-table-column label="操作" width="600" align="center">
        <template slot-scope="scope">
          <router-link :to="'/teacher/edit/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑课程基本信息</el-button
            >
          </router-link>
          <router-link :to="'/teacher/edit/' + scope.row.id">
            <el-button type="primary" size="mini" icon="el-icon-edit"
              >编辑课程小节信息</el-button
            >
          </router-link>
          <el-button
            type="danger"
            size="mini"
            icon="el-icon-delete"
            @click="removeDataById(scope.row.id)"
            >删除课程</el-button
          >
        </template>
      </el-table-column>
    </el-table>
    <!--分页条-->
    <el-pagination
      :total="total"
      :current-page="page"
      :page-size="limit"
      style="padding: 30px 0; text-align: center"
      layout="total,prev,pager,next,jumper"
      @current-change="getList"
    >
    </el-pagination>
  </div>
</template>
<script>
//引入调用teacher.js文件
import course from "@/api/edu/course";
export default {
  //写核心代码位置
  // data:{
  // },
  data() {
    //定义变量和初始值
    return {
      page: 1, //当前页
      limit: 10, //每页记录数
      total: 0, //总记录数
      courseQuery: {}, //条件对象
      list: null, //用于存储查询之后接口返回的结果
    };
  },
  created() {
    //页面渲染之前执行，一般调用methods里面定义的方法啊
    //调用
    this.getList();
  },
  methods: {
    //创建具体的方法， 调用teacher.js定义的方法
    //查询讲师列表
    getList() {
      course.getListCourse().then((response) => {
        this.list = response.data.list;
      });
    },

    resetData() {
      //清空
      //表单输入项清空
      this.courseQuery = {}; //双向绑定， 清空对象即清空表单中的值
      //查询所有的讲师数据
      this.getList();
    },

    //删除课程
    removeDataById(courseId) {
      this.$confirm("此操作将永久删除课程记录, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      }).then(() => {
        //调用删除方法
        course.deleteCourseId(courseId).then((response) => {
          //删除成功
          //提示信息
          this.$message({
            type: "success",
            message: "删除成功!",
          });
          //刷新列表页面
          this.getList();
        });
      });
    },
  },
};
</script>